Veritas-bu

[Veritas-bu] Backup speeds Windows servers

2007-01-05 09:27:06
Subject: [Veritas-bu] Backup speeds Windows servers
From: Karl.Rossing at Federated.CA (Karl.Rossing AT Federated DOT CA)
Date: Fri, 5 Jan 2007 08:27:06 -0600
We get between 6MB/sec and 12MB/sec on single streams going to a NB 6.0 
MP3 server running Solaris 10 over the LAN. The data gets staged to the 
SAN and then gets backed up to LTO2 drives.

I have noticed a significant increase in backup speed with BroadCOM copper 
GB adapters by simply upgrading the Microsoft provided driver to a 
Broadcom driver. We currently like version 9.81d. It's kind of hit/miss 
with broadcom, some versions of the driver seem to work better than 
others.

This http://seer.support.veritas.com/docs/242918.htm document helps you 
gage the backup disk speed on you're NB client. It's particularly useful 
in ruling out the local drives as a bottleneck.




Bobby R Windle <bwindle at wlgore.com> 
Sent by: veritas-bu-bounces at mailman.eng.auburn.edu
01/05/2007 07:36 AM

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Re: [Veritas-bu] Backup speeds Windows servers







I'm curious to hear what kind of speeds (mbs/sec) others are getting 
backing up windows servers. 

Running Netbackup Enterprise 5.1 mp6 under Solaris10 on master/media 
servers. 

        a.        Using brocade 2g ports 48000 director. 
        b.        IBM Ultrium LTO Gen2 drives 
        c.        Sun branded Qlogic 2gb cards. single port feeding each 
tape drive. 
        d.        The storage on the windows servers is FC attached 
Hitachi Tagmastore 9990.  (Very fast drive configuration.) 
        e.         Servers are HP G5's also 64 bit. Some are 32 bit. Seems 
32 bit servers are actually faster. 

note:         Some of my other backups such as Solaris, Linix and Netware 
can get as much as 20 mb/sec with this configuration. 
        So why are the windows servers so slow? Any  one have some kind of 
idea what may be a cause?  Or it is what it is!  Windows! 

Bobby Windle ( Data backup & Recovery )
W.L. Gore & associates, Inc.
bwindle at wlgore.com
cell : (302) 588-7374 (preferred)
office: (302) 292-4026_______________________________________________
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